Lease rod or spindle for insertion between the threads of the lease of a weaving warp



March 31, 1931. u BISCHQE 1,798,363

LEASE ROD OR SPINDLE FOR INSERTION BETWEEN THE THREADS OF THE LEASE OF A WEAVING WARP Filed June 16, 1930 M. BI SGAa Patented Mar. 31, 1931 UNITED STATES ULRICH BISCHOF, OF AARAU, SWITZERLAND LEASE ROD OR SPINDLE FOR INSERTION BETVEEN THE THREADS OF LEASE? OF A WEAVING WARP Application filed June 16, 1930, Serial No. 461,590, and in Germany June 28, 1929.

In previously known devices for introducing the lease rods or spindles into the lease of a weaving warp the guide passage for the lease cord extended in the longitudinal di- 5 rection of the rods 0r thread separators, the

15 sented a s irall rooved or screw-threaded the point of entry of the threads. Also in member engaging the warps, the guide passage of which for the lease cord was likewise arranged in the longitudinal direction of the thread separators and terminated at these arrangements the open passage comes in contact with the threads and may occasion damage thereto, particularly when the threads are of thin silk. Further, by the conical spirally grooved or screw-threaded member, in these arrangements, the threads were subjected to severe friction.

As the conical thread separators were truncated at the extreme end of the spiral groove in consequence of the necessity for a passage for the lease cord, there is also effected at this point stressing of the threads which may occasion damage thereto.

The subject of the present invention is an improved construction of lease rod which overcomes these drawbacks and which permits certain dividing of the threads of the warp, exact guidance of the lease cord, and exact guidance of its point between the 0 threads of the lease.

The lease rod according to the invention is eye-pointed like a needle, the eye being located in the warp plane, a guiding groove for the lease cord leading to the point.

In the accompanying drawing which illustrates the invention Figs. 1 and 2 show a part of the knotting apparatus with the lease rods in elevation and in plan respectively, 7

while Fig. 3 is a cross-section through a group of rods."

pered after the fashion of a flattened cone.

Its transverse passage or eye 3 merges into a guiding groove 4 for the lease cord ending at the point of the rod, while the continuation of the eye at the other side merges into a longitudinal groove 5 parallel to the axis of the rod as a further guide, for this cord, which groove 5 terminates about midway between the point and the end of the rib. Each lease cord 6 passing through the warp penetrates the eye 3 in the forward movement of the rod and lies stretched in the guides 4 and 5, while at 7 a part extends along the rod and finally penetrates the passage 8 whence it is taken up in known manner by the knotting apparatus. All the edges of the lease rod determining the direction of the lease cord are rounded to avoid friction and wearing of the threads.

As known and as shown in the drawing, the warp threads 9 bear in staggered arrange ment on the lease cord. On the forward movement of the rod travelling with the knotting apparatus the warp threads are forced to slide along the obtuse angles formed by the cord and the cone over the pointed ends of the rods, i. e., the upper threads above and the lower threads below. As the warp threads rising up the conical faces of the rods do not suddenly lose their guide behind the point of the rods, namely the cord, deflection of the warp threads from the predetermined path, that is, running of the upper threads beneath the point of the rods and vice versa is impossible.

Figs. 1 to 3 show the position of the lease rods as well as the lease cord passing through the same to the knotting apparatus.

As set forth in the specification and as ap pears in the drawing, by the tapered and needle-like formation of the rod end unrestricted running of the Warps on the rods is ensured and at the same time there is effected exact guidance of the lease cord and also cer tain guidance of the rod point into the lease Without injurious friction on the threads.

What I claim is 1. A lease rod or spindle for insertion between the threads of the lease of a Weaving warp, comprising a stem having an eyepointed end like a needle, the eye being located in the plane of the Warp, a guide groove leading from the said eye to the point of the rod.

2. A lease rod or spindle for insertion between the threads of the lease of a Weaving Warp, comprising a stem having an eyepointed end like a needle, the eye being located in the plane of the Warp, a guide groove leading from the said eye to the point of the rod, a second guide groove emanating from the said eye parallel to the axis of the rod at the point of exit of the lease cord.

3. A lease rod or spindle for insertion between the threads of the lease of a Weaving 1:; warp, comprising a stem having an eyepointed end like a needle, the eye being located in the plane of the Warp, a guide groove leading from the said eye to the point of the rod, the guiding edges of the stem determi- 30 nating the lead of the cord being rounded.

In testimony whereof I aflix my signature.

ULRICH BISCHOF. 

